Sluice gate



Dec. 6, 1938. PE|LERT 2,139,458

SLUIGE GATE Filed Dec. 16, 1957 Inventor.-

- FriedrichW Peflert Attorneys Patented Dec. 6, 1938 PATE OFFICE v SLUICE GATE Friedrich Wilhelm Peilert, Magdeburg, Germany, assignor tothe firm Fried. Krupp Grusonwerk Aktiengesellschaft, Magdebui'g-Buckau, Germany Application December 16, 1937, Serial No. 180,194 In Germany January 18, 1937 3 Claims.

6 upper reach into the sluice chamber or of the water from the sluice chamber into the lower reach. It is particularly necessary to render this energy ineffective if ships are moored in the sluice chamber in the lower reach which would be considerably agitated by a too heavy flow of Water thus placing too much strain on the hawsers. The known devices for rendering this energy ineffective consist either of an antechamber immediately preceding the head race or of a deepened chamber in the tail race of the sluice chamber behind the sluice gate. In this case the antechamber is formed by a transverse wall against which the upper reach is precipitated in order subsequently to flow through a flow aperture in the transverse wall into the sluice chamher. In the deepened chamber at the tail race the water also flows against a wall, loses its live force owing to the vortices formed in the chamber and flows tranquilly into the lower reach.

The invention aims at designing the sluice gate in such a way that the energy is already dispersed during the flowing of the water through the sluice gates. In this way the sluice chamber can be considerably shortened, and both it and the upper and lower reaches can be kept free from structures of the kind mentioned. The invention is particularly applicable to the gates of sea locks where owing to the great length of these gates extending in the direction of the flow of water the construction of the device for dispersing the energy presents no further difficulties. When dealing with such tidal locks in which the inland water level is alternately higher and lower than the seaward water level, the hatch built into the sluice gates will have to be watertight in both directions and the device for dispersing the live force of the water must be so designed as to be effective irrespective of the direction in which the water is passing through.

The drawing shows by way of example two embodiments of the subject of the invention, namely a section of the lower part of the sliding gate of a sea lock.

In both examples of embodiment according to Figures 1 and 2 a sector shaped hatch 3 (Figure 1) and 4 (Figure 2) is built into the lower part of the sliding gate l (2) and packs the flow channels 5 (6) at alternating water levels watertight in both directions. For the purpose of dispersing the energy of the water rushing through on the hatch being opened in the one or the other direction, buffer beams as well as ground sills have been provided on both sides of the hatch.

In the example shown in Figure 1 the buffer beams l and 8 are of rectangular section, and seen in either direction of flow there is a ground sill 9 (I) behind each buffer beam. On the flow channel being opened the water rushes first against the immediately confronting buffer beam and then against the sill. Owing to the water being divided on impinging against the buffer beam into separate currents and to the lower of the-currents being deflected upward by the sill, the energy of the water is dispersed to such an extent that it leaves by the sluice gate in a more tranquil state than if no devices of the kind described had been provided.

The embodiment according to Figure 2 represents a further improvement in so far as the energy of the water is almost completely dispersed. This result is obtained by extending in the direction of the hatch the upper edges of the buffer beams H and I2 which face the hatch, the impact surface ll (IZ) of the beam between the leading edge thus formed and the lower edge being concave. Also in this embodiment a sill 13 (I4) is provided behind each of the buffer beams.

In both forms of the invention illustrated the segmental hatch is connected to an operating rod l ([6), which swings the hatch about the axle I! (I8). upon a metal sill I9 (20), During the swinging movement the damming wall 21 (22) of the hatch guides upon a packing 23(24) which is mounted upon the lower edge of a damming body 25 (26) projecting downward into' the flow channel.

Whereas in the embodiment according to Figure l a strong stream of water rushes over the buffer beam as soon as the levelling commences, the water is almost entirely deflected downward in the embodiment according to Figure 2 during the whole of the levelling process, so that a water roller is formed in front of the bufier beam and acts against the water which flows through under the beam, thus causing strong eddies. Owing to the multiple deflection of the water stream the energy is' thus almost entirely destroyed in the embodiment according to Figure 2.

When using the device for inland navigation sluices it is as a general rule necessary to incorporate in the sluice gate one buffer beam and ground sill only in the direction of the lower pond.

What I claim is:-

1. In a sluice gate, means defining a flow chan- In closed position the hatch rests nel, means including a movable hatch for stopping said flow channel, and means for dissipating the kinetic energy of the water flowing through the channel, comprising a buffer beam and a sill extending across the channel at difierent distances from said hatch, said sill standing up. from the fioor'sof-the channel and said buffer :beam being located aboveithe floor of the channel.

2. In a sluice gate, means defining a flow channel, means including a movable hatch for stopping said flow channel, and means for dissipating the kinetic energy of the water flowing througnthe channel, comprising a bufi'er'beam andasillextending across the channelv at differentvdistances from said hatch, said sill-standing-up from .the floor of the channel and said bufier beam being located above the floor of the channelandhaving through the 'channel, comprising a buffer beam *andi'assilhextending across thezchatmel at different distances from said hatch, said sill standing up from the floor of the channel and said bufler beam being located above the floor of the channel and having a projection in the form of a -beak -at alts upper :edge directed toward said h-at'ch,-theimpactsurface of said buffer beam betweenitsiupper'and-lower edges being concave.

FRIEDRICH WILHELM PEILERT. 

